Enantioselective Conjugate Addition of Both Aromatic Ketones and Acetone to Nitroolefins Catalyzed by Chiral Primary Amines Bearing Multiple Hydrogen-Bonding Donors
作者:Zhong-Wen Sun、Fang-Zhi Peng、Ze-Qian Li、Li-Wei Zou、Shao-Xiong Zhang、Xiang Li、Zhi-Hui Shao
DOI:10.1021/jo300011x
日期:2012.4.20
of chiral primary amine catalysts bearing multiple hydrogen-bonding donors have been designed and synthesized. The newly developed bifunctional organocatalysts efficiently catalyzed not only enantioselective conjugate addition of aromatic ketones to nitroolefins in good yields (up to 87%) with excellent enantioselectivities (97→99% ee) but also enantioselective conjugate addition of acetone to nitroolefins
设计并合成了带有多个氢键供体的新型手性伯胺催化剂。新开发的双功能有机催化剂不仅能以良好的收率(97→99%ee)以良好的收率(高达87%)高效催化芳族酮对硝基烯烃的对映选择性共轭加成,而且还能以优异的收率(90催化丙酮)将丙酮对硝基选择性共轭加成。 –96%)具有高对映选择性(高达97%ee)。